St. Arvans is a village in Monmouthshire, South Wales. Chapel Hill lies north of the village, Gaerllwyd to the west, Woolaston to the northeast and Chepstow to the south east. Nearby towns and villages include Tutshill, Itton, Newton Green, Devauden and Shirenewton.

The parish church is dedicated to St Arvan, who, according to tradition, supported himself through fishing in the River Wye for salmon, but drowned when his coracle capsized. There was apparently within the church for many years a stone carving showing a coracle and a salmon. A refurbishment and partial restoration took place in the 1980s when the carved ceiling of the chancel and sanctuary were finally decorated as they had originally been intended when the roof was renewed in the Victorian period.

Four of the best Arts and Crafts gardens in Wales are to be found in Monmouthshire - Mathern Palace, Mounton House, High Glanae and Wyndcliffe Court. However only Wyncliffe Court, found in St. Arvans, and designed by Henry Avray Tipping, is open to the public. The beautiful 1920s Arts and Crafts garden has outstanding views to the Severn Estuary, and displays many different features including formal terraces with annuals to sunken garden, pool, and herbaceous borders.

The River Wye runs close to the village. The River Wye flows through some of the most attractive and varied countryside in Britain and some of the most beautiful stretches of the river are to found on the doorstep of St Arvans village. The famous Lover's Leap, Piercefield Cliffs, and Black Cliff are within a couple of miles of the village. While immediately to the south of St Arvans lies the celebrated Chepstow Racecourse.

The Wye Valley Walk on the eastern edge of the village offers the opportunity, for those so inclined, to walk the 136 miles from Chepstow through Rhayader and continuing on to the source of the Wye on Pumlumon, in the hills above Aberystwyth.